scholarly journals Prediction of soil stress-strain response incorporates mobilised shear strength envelope of granitic residual soil

2017 ◽  
Author(s):  
Abdul Samad Abdul Rahman ◽  
Mohd Jamaludin Md Noor ◽  
Juhaizad Bin Ahmad ◽  
Norbaya Sidek
Keyword(s):  
Shear Strength ◽  
Residual Soil ◽  
Strain Response ◽  
Stress Strain ◽  
Soil Stress

Prediction of Stress-Strain Response Using Rotational Multiple Yield Surface Framework in Malaysian Residual Soil

2020 ◽  
Vol 843 ◽  
pp. 132-137
Author(s):  
Asmidar Alias ◽  
Mohd Jamaludin Md Noor ◽  
Abdul Samad Abdul Rahman
Keyword(s):  
Shear Strength ◽  
Effective Stress ◽  
Volume Change ◽  
Yield Surface ◽  
Axial Strain ◽  
The Body ◽  
Residual Soil ◽  
Strain Response ◽  
Stress Strain ◽  
Soil Volume

Soil settlement is normally quantified using conventional soil volume change models which are solely based on the effective stress and the role of shear strength is ignored due to the difficulties to incorporate in the framework. The Rotational Multiple Yield Surface Framework (RMYSF) is a soil volume change model developed from the standpoint of the interaction between the effective stress and shear strength. RMYSF incorporates the development of mobilised shear strength within the body of the soil whenever the soil is subjected to anisotropic compression. Currently the framework has been applied to predict the soil anisotropic stress-strain behaviour at any effective stress. This paper present the enhancement of this volume change framework using normalisation of axial strain with the understanding that the failure axial strain is not unique, but increases as the effective stress increases. This technique has essentially produced a better accuracy in the prediction of the stress-strain response for Malaysian residual soils. A series of drained tri-axial tests under various effective stresses has been conducted using specimens of 50mm diameter and 100mm height and from the stress-strain curves the inherent mobilised shear strength envelopes at various axial strains have been determined. These mobilised shear strength envelopes were then applied for the prediction of the soil stress-strain response. An excellent agreement between the predicted and the actual stress-strain curves has been achieved.

First Principles Study on Shear Deformation of TIN/BN/TIN Interface

2011 ◽  
Vol 335-336 ◽  
pp. 502-505 ◽  
Author(s):  
Wei Gao ◽  
Fei Xie ◽  
Ke Jun Jia
Keyword(s):  
Shear Stress ◽  
Shear Strength ◽  
Shear Deformation ◽  
Deformation Mechanism ◽  
First Principles ◽  
Calculation Method ◽  
First Principles Calculation ◽  
Strain Response ◽  
Stress Strain ◽  
Shear Process

To obtain a view of the shear deformation mechanism, ideal shear strength and hardness in superhard nanocomposites nc-TiN/a-BN films, we studied, using the first-principles calculation method, the shear stress-strain response of a theoretical interfacial system TiN/BN/TiN, which consists of two TiN slabs and one sandwiched BN monolayer. The shear process showed that decohesion happens at the Ti-N interplanar bonds next to the interface. The calculated results show that the TiN/BN/TiN interface has the hardness that can match the TiN/SiN/TiN syatem.

Triaxial Compression of a Cohesive Soil with Effective Octahedral Normal Stress Control

1965 ◽  
Vol 2 (1) ◽  
pp. 40-52 ◽  
Author(s):  
R L Kondner ◽  
J M Horner
Keyword(s):  
Shear Strength ◽  
Normal Stress ◽  
Triaxial Compression ◽  
Cohesive Soil ◽  
Deviatoric Stress ◽  
Strain Response ◽  
Compression Tests ◽  
Ultimate Shear Strength ◽  
Stress Strain ◽  
Stress Control

The influence of the first invariant of the effective stress tensor upon the deviatoric response of a cohesive soil is investigated. Triaxial compression tests with effective octahedral normal stress control show the deviatoric stress-strain response to be definitely affected by the value of the effective octahedral stress, [Formula: see text]. The values of [Formula: see text] range from 7.5 psi to 30.0 psi. For a constant value of strain, the deviatoric stress increases with an increase in [Formula: see text]. The ultimate shear strength can be approximated as a linear function of [Formula: see text]. Hyperbolic representation of the stress-strain response provides a convenient method for obtaining a measure of the ultimate shear strength using the response of stress states other than failure. The deviatoric stress-strain response as a function of the effective octahedral stress, [Formula: see text], can be expressed in the normalized form[Formula: see text]where ε is the strain, [Formula: see text] is a measure of the shear strength expressed in terms of [Formula: see text] , and A as well as B are numerical coefficients.

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